Wow! I am impressed! I can say that if you have been teaching her you are doing a great job. I never coached young girls, but I have seen few in my clinics with as solid a foundation as your DD has. She is using internal rotation, and few older pitchers do! This is my opinion, but her hip orientation at release is very good, and I personally don't push the arm into the side issue because I think it hurts follow-through to some degree, perhaps causing the wrist to roll sooner. That can impart improper spin such as bullet spin. So I don't take Ueno as my model. I'm not knocking her, she is the best in the world, I just don't like two aspects of her mechanics. It also may be that her hip orientation creates a need to block her upper arm at her side.
I think knightsb and slugger's points are well taken. I would also start using tape or string to create a power line, and make sure the ball of her stride foot lands on the power line. I can't see by the video, but it seems she is very close if not right on the line.
I think knightsb and slugger's points are well taken. I would also start using tape or string to create a power line, and make sure the ball of her stride foot lands on the power line. I can't see by the video, but it seems she is very close if not right on the line.